Saturday night I had sex with my boyfriend, witch was great but kinda painful this was the first time feeling like this. But when we finish having sex he saw dark brown blood on his penis & asked me if I was on my period but I wasn't I'm kind of worried because I'm on the IUD & I'm not really sure if that's the reason why I had a little blood in me?
Hi Jaylynn,
It very well could be the IUD. If he penetrated deeper than usual or your sex was more "aggressive" then it is possible. It could also just be from sex itself. You can have some bleeding.
Usually however, any such blood would be red, not brown. Brown blood is "older" blood.
If it continues see your gynecologist.